Merge pull request KhronosGroup#1491 from DennisOSRM/patch-1

Fix compiler warning emitted from GCC8

7.8.2853 stable release

Create stable version 7.8.2850 for release.

Merge pull request KhronosGroup#1446 from KhronosGroup/spv-link

Link/SPV: Correct symbol IDs on merging ASTs to a single coherent space

Merge pull request KhronosGroup#1381 from LoopDawg/coverage_array

HLSL: require coverage mask to be arrayed output.

First candidate stable version of Vulkan 1.1.

Last stable 5.1.* version.

Last stable 5.0.* version.

GitLab release candidate 9 for the Vulkan 1.1 public release.

Glslang GitLab release candidate 8 for the Vulkan 1.1 public release.